Google Sign-In

Google Sign-In is a secure authentication system that reduces the burden of login for your users, by enabling them to sign in with their Google Account—the same account they already use with Gmail, Play, and other Google services.

Google Sign-In is also your gateway to connecting with Google’s users and services in a secure manner. You can give your users the opportunity to pay with Google Pay, share with their Google-wide contacts, save a file to Drive, add an event to Calendar, and more. Integrate Google’s user-centric APIs and services inside your app to help your users take action and convert.

Seamless sign-in experiences

With Smart Lock for Passwords on Android, you get frictionless sign-in and sign-up flows for your apps.

Users can create new accounts on your service with a single tap and get automatically signed-in across devices. In turn, you reduce the risk of forgotten user passwords and missed conversion opportunities when users get frustrated trying to sign in or move on to another activity.

When a user saves their password to Smart Lock for Passwords on Android or Chrome, they can skip entering their credentials on all of their devices.

SMS Retriever API

Verify your users by SMS without making them deal with verification codes. By using the SMS Retriever API, your Android app can automatically retrieve verification codes intended for your app, without having to request full SMS reading permissions.